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新型高压内双馈风力发电机及其电磁特性研究

DOI: 10.13334/j.0258-8013.pcsee.2015.22.022, PP. 5869-5876

Keywords: 内双馈风力发电机,辅助绕组,高压大容量,电磁特性

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Abstract:

为满足兆瓦级风力发电机组的高压大容量需求,文中提出一种新型高压内双馈风力发电机,定子上有两套绕组,主绕组输出高电压到电网,辅助绕组输出的低电压为转子变流器的输入电压。阐述了该发电机的结构、工作原理、励磁启动方式,采用有限元方法对发电机的电磁性能进行了仿真与分析,并进行了样机试验。仿真结果与样机试验结果表明:在不同风速情况下,高压内双馈风力发电机辅助绕组端可为变流器提供稳定的低压电源,并且定子端可获得频率稳定的电压输出,满足了双馈风力发电机的高压和大容量要求。

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